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Pioneer qx-8000 User Manual

Pioneer qx-8000
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Pioneer qx-8000 Specifications

General IconGeneral
TypeStereo Receiver
Tuning RangeFM, MW
Speaker Load Impedance4Ω to 16Ω
InputsAux
OutputsTape
Input Sensitivity2.5mV
Signal to Noise Ratio90dB
Semiconductors3 x IC

Summary

Pioneer QX-8000 Features Overview

Four-Channel Quadralizer

Creates an all-encompassing four-channel sound field for a life-like concert hall sensation.

Two Quadralizing Effect Systems

Offers 'Matrix' and 'Phase Shift' modes for different 4-channel effects from stereo sources.

Standard 2-Channel Operation

Can be used as a regular 2-channel stereo receiver with optional expansion.

4-Channel/2-Channel Tape Recording

Supports recording and playback for both 2-channel and 4-channel tape decks.

4-Channel Auxiliary Controls

Features balance controls and separate headphone jacks for quad-sound field control.

Versatile Tape-to-Tape Facilities

Enables 2-channel stereo to quadralized tape dubbing and normal tape dubbing.

Circuit Construction Highlights

Highlights FET FM tuner, hybrid/monolithic ICs, and low-distortion amplifier design.

Line Voltage, Fuse, and System Composition

Line Voltage and Fuse Settings

Instructions for changing line voltage settings and replacing fuses for proper operation.

4-Channel Stereo System Composition

Guidance on combining the QX-8000 with other components for a 4-channel system.

QX-8000 Performance

Details on 4-channel stereo performance from tape and 2-channel sources.

Installation and Room Acoustics

Installation Guidelines

Important points for placing the unit to ensure proper ventilation and stability.

Room Acoustics for Sound Quality

How room characteristics affect sound reproduction and tips for improvement.

Speaker System Setup and Connection

Speaker System Arrangements

Outlines 2-2, 3-1, and 4-0 system arrangements for optimal 4-channel performance.

Speaker System Selection

Guidance on selecting and arranging speaker systems for optimal 4-channel sound.

Speaker System Connection

Step-by-step instructions for connecting speaker systems to the receiver.

Antenna and Grounding

FM Antenna Connections

Recommendations for FM antenna types and connection methods for optimal reception.

AM Antenna Setup

Guidance on positioning the ferrite antenna and using an accessory lead antenna.

Grounding Importance

Explains the importance of ground leads for safety and noise elimination.

Connection Diagram and Terminals

Turntable Connections

Instructions for connecting turntables to PHONO 1 or PHONO 2 input jacks.

Cartridge Tape Player Connection

Connects cartridge tape player outputs to AUX 1 or AUX 2 input jacks.

Tape Deck/Recorder Connections

Details on connecting tape decks for recording and playback operations.

Two Tape Deck Setup

Configuration for duplicating or editing recorded programs using two tape decks.

Front Panel Controls and Indicators

Power and Speaker Selection

Controls for unit power and selecting front/rear speaker systems.

Headphone and Tone Adjustments

Headphone jacks and controls for bass/treble on front/rear channels.

Audio Filters and Enhancements

Switches for audio filters, loudness, and FM noise suppression.

Tuning Indicators and Controls

Meters for tuning accuracy and the main tuning knob.

Volume and Mode Settings

Master volume control and selectors for program source and playback mode.

Quadralizer and Source Selection

Switches for Quadralizer mode (MATRIX/PHASE SHIFT) and input source.

Preparations and System Checks

Initial Operation Preparations

Sets volume, mode, balance, bass/treble, and tape monitor switches for initial setup.

Checking Channel and Speaker Interaction

Verifies correct operation of each speaker channel by adjusting balance controls.

Audio Level Balance and FM Reception

Adjusting Level Balance

Guides balancing speaker levels between front, rear, left, and right channels.

FM Reception Tuning

Steps for tuning FM stations, optimizing reception, and identifying stereo broadcasts.

AM Reception and Playback

AM Reception Tuning

Instructions for tuning AM stations and adjusting for best reception.

Playing Records

How to play records using PHONO 1 or PHONO 2 inputs and selecting modes.

Using Cartridge Tape Players

Connecting and operating cartridge tape players via AUX inputs.

Tape Deck (or Tape Recorder) Operations

Tape Deck Playback

Instructions for playback using TAPE 1 or TAPE 2 MONITOR jacks.

Tape Recording

Guidance on recording signals from various sources to tape decks.

Monitoring Recorded Programs

Using the TAPE MONITOR switch to monitor recording or playback.

Duplicating or Editing Programs

Steps for creating a tape library by duplicating or editing recorded programs.

Quadralizer Circuit Explained

Matrix System Operation

Details on the MATRIX system for converting 2-channel to 4-channel sound.

Phase Shift System Operation

Details on the PHASE SHIFT system for 4-channel conversion with phase differences.

Advanced System Setup and Troubleshooting

Setting Up 2-Way Multi-Amplifier System

Connecting the QX-8000 with an electronic crossover for a 2-way system.

Troubleshooting Common Malfunctions

Identifies common noise issues and their suspected sources and remedies.

Pioneer QX-8000 Specifications

Semiconductor Components

Lists the types and quantities of semiconductors used in the unit.

Power Amplifier Specifications

Details music power, continuous power output, and harmonic distortion.

FM Tuner/MPX Section Specs

Technical details for FM frequency range, sensitivity, selectivity, and signal-to-noise ratio.

AM Tuner Section Specifications

Technical details for AM frequency range, sensitivity, and selectivity.

Preamplifier Section Specs

Details output voltage, distortion, frequency response, and input sensitivity.

Miscellaneous Specifications

Includes power requirements, dimensions, weight, and furnished accessories.

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